Permutation-pad lock



(No Model.) n v s. s. DU-VAL. PERMUTATION kPADLOK.

No. 558,367. Patented Apr. 14,|(1)896.

UNITED STATES PATENT OFFICE.

SYDNEY S. DTI-VAL, OF RICHMOND, VIRGINIA.

PERNIUTATION-PADLOCK.

SPECIFICATION forming 'part `of Letters Patent No. 558,367, dated April14, 1896.

Application iiled September 23, 1895. Serial No. 5,6 3,364. (No model)To @ZZ whom, t 11m/y concern:

Be it known that I, SYDNEY S. DU-VAL, a

citizen of the United States, residing at Rich-` mond, in the county ofHenrico and State of Virginia, have invented certain new and usefulImprovements in Locks; and I do declare the following to be a full,clear, and exact description of the invention, such as will en'ableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to thefigures of reference marked thereon, which form a part of thisspecification.

My invention has for its object to improve permutation-locks whereby itbecomes practically impossible to unlock the same unless the personknows the combination, and whereby the lock is improved and simplifiedin the construction and arrangement of its parts.

The invention is particularly adapted for use in padlocks; also, theinvention may be easily adapted for use in locks of other kinds.

In the accompanying drawings I have shown two forms of my invention, oneform being applied to a padlock having a swinging shackle and the otherto a padlock the shackle of which slides 3 but I do not wish thereby tobe limited to the particular form of invention shown so long as theprinciples of my invention are embodied.

Referring to such drawings, Figure l is a face view of a padlockprovided with my invention, the padlock having a swinging shackle. Fig.2 is a view of the same with the outer face of the case removed. Figs. 3and et are views similar to Fig. 2, except that they show the parts inrdifferent positions. Fig. 5 is a sectional view taken on the-line 5 5of Fig. 3. Fig. 6 is a sectional view taken on the line G 6 of Fig. 3.Figs. 7, 8, and 9 are detail views. Fig. lO is a plan view of anotherform of lock, in which the shackle slides, one of the face-plates of thecasing being removed. Fig. Il is a vsimilar view to Fig. l0, except thatthe parts are shown in different positions. Fig. l2 is a detail planview of the disk 3.

The casing 25 of the lock may be shaped and put together in any usual orapproved As shown in Fig. l, the lock is provided with two knobs 26 and27, by which the interior operating mechanism is operated. Secured tothe face-plate of the lock and arranged concentrically to the said knobsare dial-plates 28 and 29, over which travel pointers 30 and 3l,carried, respectively, by the shafts of the knobs 26 and 27.

The lock illustrated in Fig, l. has a swinging shackle 1,With thenotched and beveled end of which engages ahook or dog 2, mounted withinthe casing. A spring 9 bears against the dog 2 and forces it in positionto engage with the end of the shackle whenever it is forced into thecasing of the lock. A hook or catch 5 is pivoted to the dog 2, and itsend rests upon and engages with a cam or ratchet wheel 8, which ismounted upon the spindle 33 of the knob 27, being held in constantengagement therewith by the spring l0. It will be understood thatwhenever the knob is turned so as to rotate the ratchet or cam wheel 8in the direction of the arrow, Fig. 2, the dog 2, if free to be moved,will be drawn out of engagement with the shackle and the latter leftfree to be moved. Upon the shaft 32 of the upper knob 2G there ismounted a disk 3, in the edge of which there is formed a notch or recessll'. This disk is mounted op- 'posite to the upper end of the dog orcatchbar 2, and the latter is provided with a pin i2, which projectstoward the disk. Except when the disk 3 is turned so as to bring therecess l1 in its periphery opposite to the pin l2 it operates to preventthe catch-dog 2 from being moved to release the shackle, as is apparentfrom an examination of Figs. 2 and 3 of the drawings.

et represents a band which encircles the disk 3, and is held infrictional engagement therewith by a spring 14, so that the band anddisk turn together under ordinary circumstances. This band is slotted,as indicated at 13, the slot being so disposed that it may be broughtopposite to the recess ll in the disk, and these two, the slot 1l andrecess 13, brought opposite to the pin 12. The band is provided with anoutwardly-projecting pin 6, the pin being so disposed as not to engagewith the pin 12 when the band is turned, as illustrated in Fig. 7 of thedrawings. The catch 5 is provided with a pin or stop-piece 7 whichis sodisposed as to lie in the path of the pin 6 upon the band whenever thecatch is raised toward the disk 3.

Having thus described the parts of the IOO lock, I will now set forththeir operation, it being supposed that the parts are in the positionsindicated in Fig. 2 of the drawings, the shackle being confined in itsclosed position.

The person manipulating the lock first turns the lower knob in thedirection opposite to that indicated by the arrow in Fig. 2 to theproper point. as indicated by the dial 29, so as to raise the catch intothe position indicated in Fig. This brings' the pin 7 into position tointercept the pin C whenever the band carrying the latter turnssufliciently far. The next manipulation is to turn the upper knob in thedirection indicated by the arrow in Fig. 23, which turns the disk 3 andthe band -i until the pin upon the latter en gages with the pin 7, whenthe movement of theband is stopped, while the rotation of the disk maybe continued. The upper knob should be turned at least one completerevolution, in order to insure the engagement of the pins G and 7. Afterthe pins 6 and 7 have come into engagement and the further rotation ofthe band -t thereby stopped the disk should continue to be rotated untilthe recess ll therein is brought opposite to the slot lil in the band.lVhen this position of the parts is arrived at, it maybe indicated bymeans of the dial. and pointer associated with the upper knob. The nextmanipulation is to turn the lower knob sufficiently far to permit thecatch 5 to fall again into the position indicated in Fig. l, thusreleasing the band et. This being done, the upper knob is again turnedso as to carry the disk 23 and the band linto position to bring therecess and slot opposite to the pin l2 of the catch bar or dog 2, thisposition of the parts being indicated by means of the pointer and dial.The parts having been brought to this position, the lower knob is turnedin the direction of the arrow, Fig. 2, which will operate to brin g theparts into the positions indicated in Fig. 4, releasing the shackle.

XVhen it is desired to again secure or lock the shackle after the catch-barQhas engaged therewith, the catch 5 is raised and the upper knobturned sufficiently far to bring the pins (i and 7 into engagement,which results in stopping the further movement of the band with thedisk, after which the disk is turned sufiiciently far to carry therecess ll out of register with the slot I3, after which the shacklecannot be released except by following the steps of the combination ashave been heretofore set forth.

In order that the combination may be easily chan ged, I iirst mount thedisk upon a reduced portion 36 of the spindle or shaft 32 and hold it infrictional engagement with the shoulder of such `reduced portion bymeans of a spring-washer 1G, as represented in Fig. S. The spring-washerproduces asutlicient friction between the shaft 32 and the disk 3 tocause them to turn together under ordinary circumstanees, and yet whenthe disk is forcibly held the shaft may be turned therein, as indicatedby dotted lines.

In order to change the combination, the parts are brought into thepositions indicated in Fig. 4 and there held by means of the lower knob.Vhile thus held the upper knob is turned, its shaft or spindle rotatingwithin. the disk, but without imparting motion thereto. It will beunderstood that whatever number the pointer indicates upon the dial willthereafter be the number to which it should be turned when the parts arebrought into the positions indicated in Fig. 4, permitting the releaseof the shackle. If desired,

the shaft 32 of the upper knob may be provided with a ratchet-wheel, andsuch a construction is indicated in Figs. l0 and ll.; but ordinarilythis is not required.

In Figs. l() and l1 is represented a form of my invention in which theshackle slides into and out from the lock-easing, and wherein the twoends of the shackle are each provided with hooks by means of which theshackle is locked in place. The parts 2, 3, 4, 5, and S in this lock aresubstantially the same as the si milarly-numbered parts in the form ofmy invention already described. The locknowbeing described is providedwith a second hook or catch-bar 2', which engages with one end of theshackle, and pivoted to this hook or catch-bar is a hook 5', which isheld in engagement with and is operated by the ratchet or cam wheel 8,the hook 5 engaging with one side of the said wheel or disk and the hook5 with the opposite side. In this form of my invention the band -l.-,instead of being provided with a pin (5, has its edge adjacent to theslot 155 turned outward, as at G', to form a stop, and instead ofproviding the catch 5 with a pin 7 its end is so shaped' that it engageswith the outturned portion (5 of the band when it is desired to arrestthe motion of the band relative to the disk 23, and the catch 5 israised for that purpose. Vhen the parts have been brought to theposition indicated in Fig. ll, the shackle is released by turning theratchet wheel or disk 8 in the direction indicated by thc arrow, andthis movement, through the two catches 5 and 5', withdraws the hook-bars2 and 2 from engagement with the shackle, which is thereby freed and maybe removed from the lock. In this form of my invention I have shown thespindles 32 and 33 as being squared at their ends to receive a key bywhich they are turned instead of having the knobs shown in the otherform of my invention.

It will be understood that the bar 2 might be connected with andarranged to operate a bolt instead of engaging with a shackle, the otheroperating mechanism remaining the same as shown in the drawings, andthat in either case the bar operates as alocking-bar. Hence in theclaims hereof I wish to be understood, in using the words locking-bar,as referring to the part which is controlled IOC) IIO

by the permutation mechanism, and which when operated serves eithermediately or immediately to effect the direct locking or securingaction.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. In a lock, the combination of the locking-bar having a projecting pinand a permutation mechanism comprising a disk having its peripheryrecessed, and a band fitted to the periphery of the disk, and providedWith a slot, the band being free to be moved about the said diskindependently thereof substantially as set forth.

2. In a lock, the combination of a locking'- bar, a catch securedthereto, a permutation mechanism which controls the bar, and means,independent of the permutation mechanism, which engage With the catchand through it operate the locking-bar When the permutation mechanism isproperly set, substantially as set forth. A

3. The combination in a lock, of a lockingbar, a catch, :means forengaging with the catch for lnoving the locking-bar, and a permutationmechanism controlling the lockingbar, the said permutation mechanismcomprising a plurality of members, one member being controlled in itsmovement by the said catch, substantially as set forth.

4L. rIhe combination of a lockingbar, a catch pivoted thereto, a ratchetor cam Wheel with Which the catch engages, and a permutation mechanismcontrolling the locking-bar comprising a plurality of members, the saidcam-Wheel serving to move the catch into a position to engage one memberof the permutation mechanism and hold it from movement and serving alsoto engage With the catch and to move it and the locking-bar,substantially as set forth.

5. In a permutation-padlock, the combination of a catch or locking-baradapted to engage With the shackle, a catch pivotally sccured thereto, arotatable ratchet or cam wheel adapted to engage With the said catch andto move it and the locking-bar, and apermutation mechanism controllingthe lockingbar comprising a disk and a band encircling the disk, theseparts of the permutation mechanism having recesses or notches adapted tobe brought into registry, and the said catch being arranged when movedinto certain positions by the ratchet orcam Wheel to engage With andarrest the movement of one member of the permutation mechanism,substantially as set forth.

6. The combination of the locking catchbar, 2, provided With a pin, 12,the catch, 5, secured thereto, the ratchet-Wheel, 8, engaging therewith,the disk, 8, having a recess in its periphery, and the band providedWith a recess adapted to be brought into registry with the recess in thedisk, the catch, 5, being disposed as set forth, whereby When moved intocertain positions by the disk, 8, it arrests the movement of the band,4, substantially as set forth.

7. The`combination in alock, of a lockingbar, and a permutationmechanism comprising a disk having a recess in its periphery, a bandsurrounding the disk provided with a recess, means for connecting theband and disk by frictional engagement, means for rotating the disk, andmeans for arresting the movement of the band independent of the disk,substantially as set forth.

8. In a permutation-padlock, the combination with the casing and theshackle, of two rotatable spindles or shafts mounted in the casing, onecarrying the Wheel or disk adapted to engage with and positively operatethe locking-bar, and the other carrying the permutation mechanism, alocking-bar adapted to engage With and hold the shackle, a connectingcatch or bar between the said locking-bar and the aforesaid Wheel ordisk Which operates the locking-bar, and means whereby the said shaftsor spindles may be rotated, substantially as set forth.

9. In a permutation-lock, the combination of a locking-bar, a disk WithWhich the said bar is adapted to engage and comprising a portion of thepermutation mechanism, the spindle or shaft upon Which the said disk ismounted, the disk being held in engagement with the said shaft byfrictional means, Whereby under ordinary circumstances they turntogether, While the shaft may be moved independently of the disk Whenthe latter is held, and means for operating the locking-barindependently of the permutation mechanism, substantially as set forth.

In testimony whereof I affix my signature in presence of tivo Witnesses.

SYDNEY S. DU-VAL. Witnesses JESSE G. Hicks, OHAs. O. SAvILLE.

IOO

